Hand-firearm.



No. 884,065. .PATENTED APR. 7, 1908. K. A. BRUNING.

HAND PIRBARMS.

APPLIOATIOKFILBD AP.B..,27, 1907.

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PATENTED APR. .'7, 1 908l K. A. BRUNING. HAND PIREARM.

APPLICATION FILED APB.. 2'7, 1907.

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u H f Witness@ PATENTED APR. 7, 1908.

TNO. 884,065,

K. A. -BRUNING- HAND PIREARM. APPLICATION PILED APR. 27, 1907.

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r Iti KARLAUGUST BRUNING', or ZAANDAM', NETHERLANDS.

Specication of Letters Patent.

HAND-FIREABM.

Patented April 7, 1908.

Application mea Aprii 27, 1907. semi No. 370,578.

' To all 'whom it may concern:

- vBe it known that I, KARL AUGUST BRN- ING, a subjecty of the Queen of lthe Netherlands, `residing at Zaandam, Province of North-Holland, Kingdom of the Netherlands, have invented certain newand useful Imrovements in Hand-Firearms; and I do' ereby declare thel following to be a full,

. clear, and exact description ofthe invention,

such as will enable others skilled in the art to which it l appertains to make and use the same, reference being had to the accompanying drawin s, and to letters or figures of reference mar ed thereon, which-forma part of this speciiication. v i' My invention relates to hand firearms, and

more'especially to'hand firearms of the recoil-operated automatic type, and consists in certain details of construction-hereinafter to be described, and claimed.

Referring to the drawings which like parts are similarly designated-Figure 1 is a vertical, longitudinal section through the breech-bolt of a firearm constructed inaccordance with my invention; Fig. 1a is a rear elevatlon thereof; Fig. 2 is a horizontal section before firing; Fig. 3 is a like view, after firing; Fig. 4 is a section similar to Fig. 3,

showing a modification; Fig. 5 is a section showing parts in ring position in the gun; Fig. 6 is -a vertical, longitudinal lsection showing a modification of the endjof the bolt; 6a is an end view thereof; Figs. 7, 8 andv 9 are details; Fig. lOis a horizontal, central section of Fig. 5; Fig. 11 is a section on line a-b, Fig. 10.

Referring to Figs. 5 and 10, the mechan-l 1sm comprlses a breechframe 3 fixed to the usual stock, not shown, and provided with oppositely situated lateral openings 38L hav-l lngbeveledv or cam faces 3b, the purposes -of which will hereinafter be described. The rear end4 of the barrel 2 is threaded and con- Anected-to a sleevel which is likewise prol '3. The rear end of `the breech frame is closed. bya hollow plug 20 having lugs 21 of `a bayonet joint, by means of which the rear fend of the breech frame is closed. The barrel that hasmovement both with and independsleeve 1 into those 3a in the breech a cylinder closed at one end and connected tothe breech-bolt by a bayonet joint formed by lugs a5 entering .suitable grooves at d. Within the cylindrical rear end d of the bolt is a coil spring yb4 that surrounds the reduced end'of the firing pin 11, and through the pin is a vertical opening. 12 through which passes the tail 57 of the rectangular cocking lever b3 pivoted at 13 to lateral lugs 13a on the irin pin 11 the tail of said lever having a beve ed face bs. Within the opening 12 is -a coil spring b taking against the tail of the lever b3 and tending to hold it down. On the breech-bolt is a stop a3 whose end takes against 'the nose b5 of lever b3.

-Mounted over the firing pin 11 rby means of journals c2 taking into longitudinal grooves 22 in the bolt, is a yoke or e uivalent device c, (which constitutes the 'coc ing. lever) hav- .ing arms of equal length, and provided with in Fig. 1 'as resting on top of the stop as.

The lower end of said yoke takes against a shoulder 19 on the firing pin to move it rearward against'the stress ofits spring 5, so thatl the nose of lever b3 may drop into position behind the stop a3.

Within a transverse slot-1.3 in the forward end of the ring in an exchan eable cam piece b is secured by means o a pin 14, which cam-piece, when the firing pin is projecting forward, rides between the inwardly turned ends of'the bolt-lookin lu s 8 to throw them and hold them in t eil,` ocking recesses or openings inthe sleeve 1, while the firing pin is movin forward. These lugs 8 project through t e openin s 1a in ame. When the bolt has been thrown forward by spring 5 the tail of the right-angle lever 'breech frame. When the seal actuating lever lis moved by the trigger 16, both being heldin operative ositionfby spring 17 between them, the orward .end of. the .sear

strikes the bevel face 68 of the sear b3 and lifts its nose b from behind the abutment a3, thereby releasing the firingpin 11 and f pivoted lockin lugs 8 as bein perforated,l

next pullof the trigger 16.

permitting the spring b4 to drive said firing pin against the cartridge. At the same time the yoke c is brought to the position shown in Fig. 5. The gases of explosion drive the bolt rearward, and in so doing the ejector 9 draws the cartridge from the end of the barrel and compresses spring 5.

During the rearward movement of the bolt the upper end of the oke c is forced forward by the forward inc 'ned face of the rail h fixed in the ath of said yoke c, which rides under the rai h and the latter thereby compels the yoke c to assume the inclined position shown in Fig. 1, the lower end of the lever engaging shoulder 19 on the firing in and forcing it rearward against its spring ii, permitting the sear ba under the influence of 1ts s ring b to drop behind the, stop a3. The bo t is then automatically 'rojected forward into the firing position reacly for the During the rearward movement `of the barrel 2 and sleeve 1 as a unit, by reason of y the recoil, the rounded portion 8 of the locking lugs 8 strikes the beveled edges I3" of the opening 3 in the breech frame 3, causing t ese lugs to move a ainst the action of their springs 25 to unloc the bolt from the sleeve 1 and ermit it to be propelled independently of t e sleeve along t e guides Y or rails 26 in the sleeve 1. l

It Vwill be noted that I have shown the and in Fig. 4* have shown t e firing pin provided with a locking fork b2 interchan eable with the cam b', so that when the firlng pin is rojected forward the tines 1 and-2a of the ork b2 will pass through the perforations 6' and prevent the lugs 8 from entering their recesses. This is to be used with blank cartridges where-the powder charge is comparatively small, when the sprin s 5 and b4 will be sufficiently strong to ho d the bolt durin the dischar e.

In ig. 6 I have is ensed with the pivoted locking lugs 8, and ave taken off the removable fixed head of the bolt, substi-tutin therefor the.rotatable end e of the bolt an providing thel same with locking lugs e taking into suitable recesses in the breech (not shown) -and with slots eE and e* into which take lugs andy of the interchangeable part 'are shown in Fi 7, and as the ringin is driven forward t ehead will be rotate and the lugs e will lock it, and the bolt locked thereto, in firing position.

tracted to 'm saines In Fig. 9 I have shown 'a bolt f as an open case, having a longitudinally slotted tubular shank not provided with locking lugs. The head of this bolt is exchangeable for the one .shown in Fig. 7, and is adapted for use when firin blank cartridges. Should the bolt not be t rown com letely, from any accidental cause, the 'beve ed end of the sear actuating lever h* will then take infront of the tail 127 of the Sear b3 and the gun cannot be fired, butthe bolt` 7 will be moved to the rear.

I claim- 1. In a hand firearm, the combination with a bolt, a stationary rail and a springactuated firing-pin in the bolt; of a cocking lever pivoted 1n the bolt and actuated b engagement with the rail when the bolt 1s re-` tracted, said lever engaging the firin -pin to move it into cocked position, and in opend-l ent means passing through the firing-pin `to hold the firing-pin in cocked position and simultaneously actuated by the cockin lever.

2. In a hand firearm, the combination with the bolt, a stationary rail and a spring 4 actuated firin ping of a cocking lever pivoted in the bo t, a spring-urged sear pivoted in the firing-pin, a lug on the bolt enga ed by the sear, said cooking lever actuated y engagement with the rail when the bolt is reermit the sear toen age the lug and hold t e firing-pin in. cockecf position.

V3. In a hand rearm, the combination with a bolt, a stationary cam rail and a spring-actuated tiring-pin; of a lug on the bolt, an'angle-lever mounted on the firingpin, the nose of said lever held by said lug, a yoke pivoted in the bolt and moved by the rail to retract the firing pin and angle lever to lock the in in retracted osition.

4. In a and firearm, t e combination, with a stationary cam rail, a recoil-operated, spring-propelled bolt and a spring-urged firing-pm in the bolt; of a lug on t e bolt, an angle lever whose tail passes through a vertical slot in the firin pin, a spring in the slot en aging the tail o said lever to normally ho d its nose in the path 4of the lug, and a yoke pivoted in the bolt and cammed down when the bolt is propelled rearward by the explosion gases and its tail engaging the firing pin to move it and the angle lever rearwar whereby the nose of the angle lever will 'lie behind the lug to hold the pin retracted. i

5. In a hand firearm, the combination- With the bolt; vof pivoted locking] s mounted thereon having 1perforations 1n t eir ends, a firing-pin prope ed between the ends, an exchangeable cam carried bythe firing-pin 4to hold4 the locking lugs ,in locking positlon during firin and an exchangeable forked member toA e inserted in the'placev of said cam, the tines of which forked member enter said perferations to hold the lugs in unlocked positlon under all conditions o 6. In a hand rearm, the com. ination Withla bolt; of removable, pivoted locking my invention, I have signed myr name in ligs mounteflthereolnl, a firing-pin vitiin tlllle presence of two subseribingwitnesses. olt, an exc angea e cam carrie y t e Ifiring-pin and a removable bolt-head ex- KARL AUGUST BRAUNING 5 changeable for a rotatable bolt-head and cor- I Witnesses: I

res onding cam. AUGUST SIEGFRIED DooEN n testimony that I claim the foregoing as ANNA STAPELVELD. Y 

